TWO-LINE OUTPUT MATCHING NETWORK FOR INVERSE CLASS-F POWER AMPLIFIER

摘要

Disclosed is a two-line output matching network for an inverse class-F power amplifier, said two-line output matching network comprising a pre-matching circuit and a two-line matching circuit. A first microstrip line and a second microstrip line are connected in series, and a third microstrip line which serves as an open circuit branch is connected to a connection line between the first microstrip line and the second microstrip line, the input end of the first microstrip line serving as the input end of the two-line output matching network; the two-line matching circuit comprises a fourth microstrip line and a fifth microstrip line, the fourth microstrip line being connected to the fifth microstrip line in parallel; the input end of the first microstrip line is connected to the output end of a GaN tube, the input end of the second microstrip line is connected to the output end of the first microstrip line, and the output end of the second microstrip line is connected to the input end of the fifth microstrip line, the output end of the fifth microstrip line serving as the output end of the two-line matching circuit. The two-line output matching network of the present invention not only allows an inverse class-F power amplifier to have the functions of higher harmonic control and impedance matching, but also makes the circuit structure more compact.